Hey Sideblues!
Actually, having the silencer on it doesn't do anything for the performance. We have to keep are noise level down under 90db during JMPBA races or we get disqualified. With out a silencer, it will be over 120. With a prather silencer, it will be over a 100. They measure the noise at the judge stand when you are racing, so you can't lay off the throttle.If you look at a lot of the other pics I have posted in other threads, you will notice that all the boats over here have them.
Hammer